Finding the Third Proportional to 20,302,849 and 42,278,747

Step by Step Solution

1. Step 1: Write the proportion equation
   20,302,849 : 42,278,747 = 42,278,747 : x
2. Step 2: Convert to fraction form
   20,302,849/42,278,747 = 42,278,747/x
3. Step 3: Cross multiply
   20,302,849x = 42,278,747 × 42,278,747
4. Step 4: Simplify right side
   20,302,849x = 1,787,492,447,890,009
5. Step 5: Solve for x
   x = 1,787,492,447,890,009/20,302,849
6. Step 6: Final answer
   x = 88,041,459.00